138134-25-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138134-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,3 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138134-25:
(8*1)+(7*3)+(6*8)+(5*1)+(4*3)+(3*4)+(2*2)+(1*5)=115
115 % 10 = 5
So 138134-25-5 is a valid CAS Registry Number.
138134-25-5Relevant articles and documents
Towards the total synthesis of clerodin. Part II
Bouchard,Soulie,Lallemand
, p. 5957 - 5958 (2007/10/02)
In a model study aimed at the total synthesis of clerodin 1, the tricyclic furo-furan moiety 2 was prepared. This approach was based on a stereoselective Claisen rearrangement between a cyclohexenol and a cyclic orthoester.
